'2016 Sweepstakes' Electric Challenge Twin

Started by sanjayrai55, October 30, 2016, 06:04:58 AM

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K K Iyer

Quote from: sanjayrai55 on November 20, 2016, 08:18:14 PM
Just post it (growl)

Suggestion for improving mood and making canopy at the same time:

Drink one bottle. Then cut its neck. Then divide it once vertically and once horizontally.

(Worst come to worst, you'll at least get one good dakaar from the exercise  ;D)


sanjayrai55


sanjayrai55


Voice of deaf

#53
Quote from: K K Iyer on November 02, 2016, 08:10:08 PM
That set me thinking...
Two similar ESCs, or one double capacity ESC to both motors?
Which would be better?
I don't have the theoretical knowledge to answer that.
Using one ESC to power two bldc is not a good idea , as these are synchronous ESCs the ESC talks to the motor and I don't think that at any time instant , the angular position of the two motors will be same .. ... Hope I am not wrong

Sent from my Lenovo A7010a48 using Tapatalk
Born for FPV, Forced to LOS.

sanjayrai55

What has the angular position of the motors got to do with it? This is not a multi-copter

sanjayrai55

Successful maiden today

Video in bits and pieces ;)

Take-off




sanjayrai55


sanjayrai55


sanjayrai55

Comments: Flies very well indeed! Excellent slow fly characteristics, cruises at 30% throttle comfortably

It was taken off and trimmed by Group Captain Ramesh (retd.) flown by me, and landed by Nishad  ;D

Needed a fair amount of down-trim, and showed a little tendency to climb under power. These suggest to me some downthrust is required

This concludes this build for the 2016 Sweepstakes, thanks for following

rastsaurabh

Sir, This was a excellent trial with twin engine. If i remember this is your 2 nd model with twin motors.

The Takeoff was soft and quick.

So now to the question of motors spinning at different RPM ( in a one battery 2 esc & two motors ) can be put to rest since the plane flew well.

Hope it did not have any turning tendencies.

regds
Saurabh

manojswizera

Russ-40 Trainer, Mr.moss, Pushler, Skysurfer, Mugi , F-22, Red swan, Xtra-300, redfury, flying mantaray.

sanjayrai55

Quote from: rastsaurabh on December 11, 2016, 08:08:00 PM
Sir, This was a excellent trial with twin engine. If i remember this is your 2 nd model with twin motors.

The Takeoff was soft and quick.

So now to the question of motors spinning at different RPM ( in a one battery 2 esc & two motors ) can be put to rest since the plane flew well.

Hope it did not have any turning tendencies.

regds
Saurabh

Thanks Saurabh. No, no turning tendencies.
In fact, when I checked the Lipos after the flight, they both had discharged precisely equal amounts (I was using 2 X 3000 mAh 3S)

sanjayrai55

Quote from: manojswizera on December 11, 2016, 08:12:37 PM
Flies very well sir.
Seems a new ground !
Thank you Manoj

I have been flying Nitros and larger size electrics at this ground - the Bhondsi ground of AAG (Aeromodellers Association Gurgaon) for some years. The noise you heard in the background were 2 150 cc Gassers :D

sundaram


ramarao

210 fpv racing quad
q100 quadcopter
1000mm DW rainbow wing
sylphid rc plane
avispad
-Twin Boom Pusher plane
FT F22 Raptor
skysurfer
Cub -j3 piper

sanjayrai55


sanjayrai55


wingmanbunty

EAT ,SLEEP , FLY

sanjayrai55

Thanks Bunty

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taitil

Yes Sir...always successful model and nice flying
:salute: :salute: :salute:

sanjayrai55


sanjayrai55

Update: added a little downthrust on both motors. Flies much easier now. Take-offs are just marvellous! Still flies at 30-40% throttle - pretty fast too ;)

sanjayrai55


K K Iyer

Beautiful. Short and sweet.
Like the way she lifts off so quickly...

sanjayrai55

Quote from: K K Iyer on December 24, 2016, 07:35:22 PM
Beautiful. Short and sweet.
Like the way she lifts off so quickly...

Thanks Iyer sir :D

In fact, just hit a little bump on the ground and was up! :)